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Marine biology is a branch of science concerned with the study of organisms in the ocean and other marine environments, including their behavior, ecology, distribution, and evolution. As a part of paleontology, which specifically focuses on ancient life forms, marine biology delves into understanding extinct marine organisms, their habitats, and how they have evolved over geological time. By studying fossils and applying knowledge from various disciplines such as geology and genetics, marine biologists can reconstruct past environments, infer historical climates, and gain insights into the mechanisms of evolutionary change in the ocean. This field also addresses contemporary issues related to human impact on marine ecosystems, making it an essential component within the broader context of life science and scientific research.